Editing Techiyat HaMeytim - Resurrection of the Dead (section)

==== All Israel Will Leave, Which is Not the Case with the Exodus from Egypt ====
In the Exodus from Egypt, not all Israel merited to leave, as explained by our Sages on the verse "I will be what I will be" that only "with the many I will be (I will reign over them) against their will," but individuals who choose to cast off My yoke, I will not be their G-d against their will (and as explained in the Midrash that those wicked who did not want to leave Egypt died during the plague of darkness), but in the future redemption even individuals will leave, as explicitly stated in Rashi's commentary on the verse "And the Lord your G-d will return, etc." that this refers to each and every one individually, and as explained in Chassidut on the verse "A great shofar will be blown, and those who were lost... and those who were cast away will come," which includes even those who will not want to leave.

The reason for this is that before the Giving of the Torah, the Children of Israel were only "children" ("Israel is My firstborn son"), and in a "son," his desire for G-dliness is natural, and therefore it is possible through free choice that transcends the soul's desire to oppose (similar to what we find on Yom Kippur, that if one transgressed on Yom Kippur, where by his choice he opposed the "essence of the day," the essential connection revealed on Yom Kippur does not atone (even according to Rabbi who does not require repentance) as explained by the Rogatchover).

But after the Giving of the Torah, when "You have chosen us" (where true choice is that from His will and nature, so to speak, there is no reason to choose one over the other, and therefore it is rooted in the very Essence), through which it became ingrained in Jewish souls that (in their innermost) they have (not only a desire for G-dliness as "children of the Omnipresent") but also the quality of "servants," our connection to the Holy One, blessed be He, became like that of a "servant" who "of himself and by his own power connects, etc." Through this, the (inner) desire for G-dliness also comes from the essence (the power of choice), and since the connection is from the essence, therefore ultimately it will be revealed (at least in general matters, such as when "a great shofar will be blown" in the future).